NWS joins 2 tornadoes in Ohio, confirms another from May 7 severe storms

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Two tornadoes that touched down in Warren County last week have merged into one, and another was confirmed as the National Weather Service continued to survey severe storms that ripped through western and southwestern Ohio.

Last week, the NWS confirmed that 13 tornadoes touched down during severe weather on May 7, including five in Warren County alone.

That total remains at 13 (and five for Warren County), as further investigation revealed that two previously confirmed tornadoes near the village of Morrow tracked a single, continuous tornado and that the track extended southwest toward the village, according to information from the NWS Wilmington office released Monday.

A new twister has been confirmed southwest of Lebanon City.

New tornado confirmed southwest of Lebanon in Warren County, Ohio

The National Weather Service has confirmed an EF0 tornado southwest of Lebanon in Warren County. The twister touched down around 10:05 PM and remained on the ground for two minutes. It cut a path three-tenths of a mile long and up to 350 feet wide, with a wind speed of 80 miles per hour.

The NWS says the tornado caused damage near U.S. Route 42, south of Lebanon in the Hillcrest area. A few trees were damaged along the highway, but a nearby home had 10 to 15 trees broken or uprooted.

New information on Morrow tornado in Warren County, Ohio

According to updated information from the NWS, the EF1 tornado touched down at 10:15 PM on May 7, was on the ground for 4.4 miles and ended around 10:20 PM. The maximum wind speed was 150 km per hour and cut a path of 350 meters. meters wide at its widest. No injuries or fatalities were reported.

It started in the Little Miami River Valley in Morrow, where surveyors noted tree and minor structure damage, according to the NWS. The twister damaged several homes along Mason Morrow Millgrove Road, ripping the second story off one and partially blowing the roof off the other.

The tornado continued northeast along the Little Miami River causing damage near the intersection of Mason Morrow Millgrove Road and Woodward-Claypool Road and destroying trees along much of the Little Miami Bike Path. It appeared to weaken as it moved northeast, causing minor damage to trees and structural damage to a home before ending.

Update on the tornado in South Lebanon

Thanks to the additional research, the NWS also expanded the track of an EF1 tornado in South Lebanon, Warren County. It touched down at 10:08 PM and was on the ground for four minutes, cutting a path 2.7 miles long and up to 500 feet wide, with an estimated wind speed of 90 miles per hour.

It originated in southern Lebanon and caused minor damage to trees in several city blocks, as well as minor damage to an outbuilding. It moved from east to northeast across Shawhan Road causing major tree damage and minor roof damage. However, the roof of one detached garage was blown off and a wall was knocked down.

How are tornadoes confirmed?

After suspected tornadoes are spotted, National Weather Service crews personally investigate possible tornado damage.

According to the weather service, the damage pattern, not how much damage was done, determines whether a tornado occurred. In tornadoes, with their violently rotating columns of air, the damage often has a chaotic appearance, with larger uprooted trees often crossing each other. Weather service surveyors often look at larger tree roots to get a good idea of ​​where the wind was blowing from.

How are tornadoes rated?

The Enhanced Fujita Scale classifies tornadoes into the following categories:

  • EF0: Weak, with winds of 65 to 85 mph
  • EF1: Weak, 86 to 180 km/h
  • EF2: Strong, 180 to 210 km/h
  • EF3: Strong, 136 to 265 mph
  • EF4: Violent, 266 to 320 km/h
  • EF5: Violent, more than 200 km/h